Advanced Materials Research Vols. 424-425

Abstract: Aquaporins (AQPs), a family of water channels, function as a water-selective transporting protein in cell membranes. Aquaporin 1 (AQP1) was first discovered in human erythrocytes as a water channel for high osmotic water permeability. AQP1 promoter is responsible for regulation of its transcription and expression. In this study, molecular biology and genetic engineering knowledge and principles of construction of AQP1 promoter plasmid, and recombinant plasmids were identified and measured for luciferase, for promoter function. Our study successfully constructed AQP1 promoter luciferase reporter gene expression plasmid and successfully carry out the functions of its detection, provides a new foundation for the transcription expression and function regulation of the AQP1

Abstract: The grain fluctuation situation of Hubei was analyzed by calculating the grain fluctuation coefficient from 1990s. And the quantitative correlation between grain production and the water disaster was studied by grey correlation analysis. The results were shown as follows. The main water disaster factors impacting grain production were effective irrigated area and planting structure, the relationship degree of which with grain yield is respectively 0.91 and 0.85 ranking the first two among all the selected factors. It was shown that water disaster influenced the grain yield heavily

Abstract: Nash equilibrium is the foundation of traditional game theory, while the benefits of game players under the Nash equilibrium are constant, so the core idea of generic risk transmission was applied to traditional static game. Accordingly a risk static game model, in which the benefits of players were subject to triangular distribution, was constructed. Then we obtained different equilibrium states under the different risk types of players. Furthermore, the classic Prisoners’ Dilemma was used to demonstrate the practice value of risk game. Through analyzing and solving the risk Prisoners’ Dilemma model which changed from the classic Prisoner's Dilemma model according to actual situation, the Pareto improvement strategy combination could be achieved. The new equilibrium result can give an appropriate explanation why there is always some prisoners conceal the corpus delicti in adventure

Abstract: In order to improve the accuracy of tiger skin texture recognition, a skin texture identification method based on fuzzy closeness is put forward in this paper: four skin texture stripes extracted from a tiger texture image are selected as a research object. The image treatment process is: firstly, connected their endpoints to form three quadrilaterals, then regarded the quadrilateral area, bottom length, and left bottom corner features as the characteristics index of the object, the fuzzy closeness degree derived from the characteristics is compared with the standard models, and the final closeness degree is obtained. Experimental results show that this method can improve the accuracy of tiger skin texture recognition, and identify the tiger skin texture effectively to achieve individual identification of tigers finally.

Abstract: In this paper, we investigate the metabolic capabilities of two kinds cells belong to enterbacteria. Firstly we develop the mathematical models for Escherichia coli and Buchnera aphidicola Cc based on Flux balance analysis methods. Then we study their capacity of producing the important metabolite Ethanol. Finally, the results show that if the metabolic pathway is more complicated, then more the terminal metabolite-AcCoA is produced.

Abstract: WSDM, as a new way of wireless channel multiplexing, could be widely used in communication anti-jamming. WSDM separates the mixed signal and extracts the signal which is needed. As we all know, most communication signals are cyclostationarity. This property could be used as the prior information to extract the useful signal more correctly. In this paper, we propose a new algorithm which could extracts concerned signal by making use of the cyclostationarity. Theory analysis and computational simulation show that the proposed algorithm can recover signal correctly and dispose the interferences which are often in use to jam the communication system

Abstract: In order to study the influence of UV irradiation, treat temperature of nano-titanium dioxide and intensity of UV irradiation on the mercury removal performance, experiments were carried out on a photocatalytic oxidization system to find the best experimental conditions. Commercial Degussa P25 was used as a photocatalyst loading on titanium mesh, and the mercury removal efficiency was stable at 8% in the absence of UV irradiation. Under the UV irradiation of 300W mercury lamp, the mercury removal efficiency surged to 100%. With the same light intensity, the same removal time, the mercury removal efficiency of nano-titanium dioxide calcinated at 100°C reached 92.2% after 0.5h while the mercury removal efficiency of nano-titanium dioxide calcinated at 500°C reached 93.6%. Intensity of UV irradiation has a positive impact on the mercury removal performance.

Abstract: We theoretically study light propagation in the two-dimensional arrays of mutually weak coupled waveguides. We study the properties of the discrete diffraction and demonstrate the existence of discrete spatial solitons in such arrays.

Abstract: Based on the mesoscopic random aggregate model and brittle-damage constitutive model, the numerical simulations of tension and compression are performed on reinforced concrete, and the thickness method is employed to simulate the interface between steel bar and concrete. Then a series of samples are generated randomly based on Weibull distribution’ mechanical parameters, and these samples are used to investigate meso damage evolution process of reinforced concrete, as well as the impact of parameter selection on macro-strength characterization of reinforced concrete. The results of numerical simulations effectively reveal the accumulation of tensile damage of meso-units, which lead to the failure of reinforced concrete. In conclusion, this research provides an innovative method to investigate the mechanical properties of interface between steel bar and concrete.

Abstract: A new analytical method on the controllability and modeling of systems is presented in this paper. For a given classical Transfer function in the complex frequency domain, we can transform it into fractional-order domain by using Laplace or Z transform and inverse transform, Trapezoidal Rule are applied. State space based on the complexity of the order, Caputo fractional derivative defined as state variables, it will be the state equation of the system. Simulation results show the feasibility of modeling